如何修改ubuntu的时区？

检查当前的时区设置：

$ timedatectl
               Local time: Thu 2019-12-05 23:22:43 UTC
           Universal time: Thu 2019-12-05 23:22:43 UTC
                 RTC time: Thu 2019-12-05 23:22:43
                Time zone: Etc/UTC (UTC, +0000)
System clock synchronized: no
              NTP service: inactive
          RTC in local TZ: no

列出可用时区。

$ timedatectl list-timezones

可以使用grep命令过滤

$ timedatectl list-timezones | grep Australia
Australia/Adelaide
Australia/Brisbane
Australia/Broken_Hill
Australia/Currie
Australia/Darwin
Australia/Eucla
Australia/Hobart
Australia/Lindeman
Australia/Lord_Howe
Australia/Melbourne
Australia/Perth
Australia/Sydney

ubuntu设置时区：

$ sudo timedatectl set-timezone Australia/Sydney

确认时区是否设置正确：

$ timedatectl
               Local time: Fri 2019-12-06 10:26:13 AEDT
           Universal time: Thu 2019-12-05 23:26:13 UTC
                 RTC time: Thu 2019-12-05 23:26:13
                Time zone: Australia/Sydney (AEDT, +1100)
System clock synchronized: no
              NTP service: inactive
          RTC in local TZ: no